If the problem corrects itself when you move the screen you probably have a loose or damaged cable between the motherboard and the screen. You will need to open your computer and check for a loose connection or damaged cable. If the cable is damaged you will need to replace it. I am including a link for the Inspiron 1420 which should be close enough to help with the teardown.
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If the problem corrects itself when you move the screen you probably have a loose or damaged cable between the motherboard and the screen. You will need to open your computer and check for a loose connection or damaged cable. If the cable is damaged you will need to replace it. I am including a link for the Inspiron service manual to help with the teardown.
If the problem corrects itself when you move the screen you probably have a loose or damaged cable between the motherboard and the screen. You will need to open your computer and check for a loose connection or damaged cable. If the cable is damaged you will need to replace it.
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If the problem corrects itself when you move the screen you probably have a loose or damaged cable between the motherboard and the screen. You will need to open your computer and check for a loose connection or damaged cable. If the cable is damaged you will need to replace it. I am including a link for the Inspiron 1420 which should be close enough to help with the teardown.
If the problem corrects itself when you move the screen you probably have a loose or damaged cable between the motherboard and the screen. You will need to open your computer and check for a loose connection or damaged cable. If the cable is damaged you will need to replace it.